Coursera between kan and Mochan

Mochan

13:14

Hello?

jokerdino

Continue

kan

Hello.

Mochan

Ok. Thanks @jokerdino, thanks also to you @kan

jokerdino

room topic changed to Coursera between kan and Mochan: Does it matter [[jokerdino]]

@Mochan np

Mochan

TY

jokerdino

13:17

ping me if needed

Mochan

will do.

kan

Can you link me to a1 handout?

Mochan

Sure.

kan

OK.... also, which step you're done?

Mochan

spark-public.s3.amazonaws.com/programming1/a1/a1.html

I'm up to step 5

kan

13:19

Great!

Mochan

:)

kan

so, we have to write a function: get_hours right?

Mochan

Yes ~

kan

return to_24_hour_clock(sec_elapsed // 3600) -- what does this do? (My sec_elapsed is the number of seconds elapsed since midnight.)

Mochan

It returns the time with 3600 seconds added onto it in 24-hour time to the caller?

Wait.

Numbers of seconds elapsed then divided by 3600 and rounded off to an integer v

kan

13:24

(Recall: the function to_24_hour_clock is already defined in the starter code.)

Mochan

Right. Oh yeah, sorry

kan

@Mochan firstly, sec_elapsed // 3600 is the number of hours passed since mid-night.

Mochan

Oh! Got it

kan

In an example, I gave, in the other room, this number was 30, which is weird. So, we send it to the to_24_hour_clock, which basically makes it a number satisfying the preconditions.

So, this function returns the number of hours since midnight!!!!

Mochan

But 30 hours is over one day. So it would be like 1 day and six hours.

So... 6hours over midnight?

kan

13:28

@Mochan but, on the clock, you'll see only 6, right?

@Mochan yes...

Mochan

So... That's the answer. Now I have to figure out how to do that, right?

kan

No, I just gave you a function that works!!!!

The function I gave you is the get_hours function.

Mochan

Oh!

kan

I hope I am not confusing!!

Mochan

No, not at all ^^

jokerdino

13:32

keep going guys. good luck

Mochan

So... For sec_elapsed, I must make a variable?

kan

@Mochan yes...that should be the parameter for the function get_hours.

Mochan

Thanks jokerdino ^~^

kan

@jokerdino Thanks, jd. :)

jokerdino

:)

Mochan

13:33

Right... So... I don't have to add it myself?

jokerdino

i be the moral support

Mochan

Ty

Wait no...

kan

     no, it is a part of the header: You'll have to write some thing like:

def get_hours(sec_elapsed):

Mochan

Yeah! I thought that! Thanks!

kan

When you're done with this function, please ping me... @Mochan

Mochan

13:38

So... Lets see...
Def get_hours(sec_elapsed):
'''Desc. And examples'''
Return to_24_hour_clock(seconds_elapsed // 3600)

kan

@Mochan exactly!!

Mochan

:DDD

kan

Next function: get_minutes.

Now, we need to display this on a clock. So, we need to get rid of the seconds corresponding to the number of hours.

How would you do this?

Mochan

Guessing but... instead of // 3600 do //60? Sorry if its wrong.

kan

No, you're partially right.

Let's do an example:

3700 seconds have elapsed since midnight...

Mochan

13:49

Ok

kan

What would you see on the clock?

jokerdino

1am

actually 12.52am

kan

@jokerdino H:MM:SS

Mochan

1:01:66

Waut

1:02:06

kan

@Mochan 66 seconds???

jokerdino

13:50

100 seconds

Mochan

61.66666666

jokerdino

1:01:40

kan

@jokerdino Right, dino!! ;)

Mochan

OH I SEE XD

jokerdino

my math not bad

kan

13:52

@Mochan So, did you get the point: we first calculate the number of hours, then, subtract the number of seconds that go into it, then see how many minutes there are and so on...

Mochan

Yep!

jokerdino

i remember doing these things with java xD

Mochan

:P

jokerdino

(val1 / val2) + (val1%val2)

kan

Now, can you try to write the function: get_minutes?

keep in mind all the steps in the computation, please.

jokerdino

13:53

@kan how good are you with python?

kan

def get_minutes(sec_elapsed):

jokerdino

we are writing a list of lists on the other chat room ;)

kan

@jokerdino Not that great. Just doing string manipulation. :(

jokerdino

:(

string manipulation should be easy once you get it in any of the language

kan

but I am striving hard to learn..,

jokerdino

13:55

i learnt quite some stuff in java and it is easy in python

kan

@jokerdino true. but, python seems to me more flexible...

jokerdino

it is, i don't disagree.

but it is not really OOPS

Mochan

return to_24_hour_clock(sec_elapsed//60-%)

I know that's wrong. Do you eat how I'm thinking though?

Get*

kan

@Mochan hey, how did we compute?

Mochan

Figure out how many... OH.

Is it still //3600?

kan

13:58

@Mochan no, I am not seeing wh you came up with this...

Mochan

XD

jokerdino

dump the whole code in pastebin

Mochan

Jd who are you talking to?

jokerdino

wait, you are writing it down. never mind

kan

@jokerdino I could but Mochan won't learn much....

Mochan

13:59

Yeah.

jokerdino

well, i don't know what she is thinking

it is very abstract

kan

See, let me give you the pseudo algorithmically how we found the number of minutes as displayed on a 24_hour clock is obtained:

jokerdino

pseudo code is useful

Mochan

Ok

kan

1. calculate the number of hours...(you did this as: sec_elapsed // 3600)

Mochan

14:01

OK good...

kan

comment: now so many hours are gone!

Mochan

1

kan

2. so, the remaining seconds are: sec_elapsed - (sec_elapsed // 3600)*3600

3. If you do an integer division of the remaining seconds by 60, you get the number of minutes.

(Run through the above steps with our example, please.)

Suggestion: hope you're having something nearby to scribble.

Mochan

Does a calculator qualify?

jokerdino

no

get a paper and pencil

Mochan

14:05

Can't.

jokerdino

right.

kan

what jokerdino said... (please...it helps)

Mochan

It's 1:05AM...

jokerdino

you can try tomorrow ;?

it's just a simple course.

deadline doesn't matter

Mochan

Perhaps I should just miss this one... I could send in what I have already and leave the rest blank. Is that OK?

jokerdino

14:07

that sounds fine.

sometimes when you are sleep deprived, you write horrible code

Mochan

@kan?

@jokerdino I can't even do simple math

jokerdino

:(

kan

@Mochan That sounds good to me.

Mochan

I'll try this tomorrow morning. If I hurry, there is potential.

kan

@Mochan Not really. Sleep. You'd understand things much better in a relaxed fashion.

jokerdino

14:09

what he said ^

Mochan

Probably. I'm so stressed. Don't laugh... But I was literally crying before I had you guys help...

jokerdino

:'(

i am glad you are persevering instead of giving up.

Mochan

Thanks jd. I'll give it a quick shot tomorrow. I might be able to ask someone. In my family for help with the math if I'm no better in the morning.

Ugh... Mobile...

jokerdino

no problem.

go to bed and have a good night rest

kan

Exactly!!

Mochan

14:13

Ty. Both of you. This really means a lot. If you're ever stuck, I'll try my best to help. -hugs-

jokerdino

it's not like you got school tmrw ;/

Mochan

Goodnight~

jokerdino

@kan got school tomrw?

@Mochan night!

kan

@Mochan No worries. :-)

@jokerdino Yes. School.

Mochan

I'm out.

jokerdino

14:14

me 2

kan

@Mochan Good night. :)

jokerdino

@Mochan waves

kan

I must leave for dinner...

jokerdino

cya

kan

Bye. :)

jokerdino

14:16

:)

kan

23:51

@Mochan I thought I'll leave this message for you:

The IDLE thingy is all well. If you want to write some code and keep modifying, File > New Window... Also, note that the menu bar of the new window looks like the one you need. :-)

I got scared unnecessarily.

Transcript for

Coursera between kan and Mochan